292 GENTIAN lAMlLY. 



globulai', with many smooth and .shiiiiii<r socils. Klowcrs raccmotl on a stout scape; 

 one or more long petioles sheathing its base, and bearing 8 oval or oblong leaflets. 

 7. LIMNANTHENIUM. Calyx and corolla o-parted ; the oval divisions of the latter with 

 a yellowish crest at their base, and in our species otherwise naked. Style short or 

 none. Pod several-seeded. Water-plants, bearing the flowers in an umbel on the 

 long slender petiole of the floating, round-heart-shaped leaves. 



1. SABBATIA, AMERICAN CKNTAURY. (L. Sabbati, an Italian 

 butaiiisl.j Chiefly in sandy and low or wet gronnds, along the coast 

 (with one or two exceptions); flowers white or pink, usually handsome, 

 in summer. ® @ 



* Flovers white, H-parted, ninnerous in cj/mcs or cori/mbs, seldom noer 



.j' brodd. 



S. panicuUta, Pursh. Stem l°-2" high, with 4 sharp wing-like 

 angles ; leaves linear or oblong, mostly 1-nerved ; lobes of the corolla 

 little longer than the narrow-linear calyx lobes. Va., S. 



S. lanceolata. Torr. &" Gray. Taller, larger-flowered, with lance- 

 ovate, 3-nerved leaves, or the upper ones lanceolate and distant, acute ; 

 lobes of corolla nuich exceeding the thread-shaped calyx lobes. N. J., S. 



S. macrophylla, Hook. Glaucous, with terete stem, 2°-3° high ; 

 lance-ovate ;!-5- nerved leaves thickish, and lobes of smaller corolla very 

 much exceeding the bristle-like calyx lobes. Ga., S. 



* * Flowers rose-pink, rarely white, with yellowish or i/rrenisli eye, 5- 

 parted, in panicled clusters, V or more broad. In nitlier dry ground, 

 much branched above, l°-'i° hi<jh. 



S. brachiata, Ell. Stem slightly angled ; leaves linear or narrow- 

 oblong ; flowers few, only 1' broad. Ind., W. and S. 



S. anguliris, Pursh. Wing-like angles to the stem, ovate or heart- 

 shaped, o-nerved leaves, and corolla 1' broad. Ontario, W. and S. 



* * * Flowers rose-pnrple or ichite, 5-6-parted, 1' or less broad, scattered 

 sinr/hj on long peduncles ; stems slender, 5'-20' high, commonly forking, 

 scarcely angled. All grow in salt marshes or near the coast. 



S. calycdsa, Pursh. Leaves oblong, pale, narrowed at base ; calyx 

 lobes lance-spatulate, longer than the mostly white corolla. Va., S. 



S. stell^ris, Pursh. Has lance-oblong leaves or the upper linear, and 

 linear calyx lobes shorter than the rose-purple yellowish eyed corolla. 

 Mas.s., S. 



S. grelcilis, Salisb. Very slender, with linear or almost thread-like 

 leaves, thread-shaped calyx lobes as long as corolla ; otlierwise like pre- 

 ceding. Mass., S. 



* * * * Flowers bright rose color or irith >'-bite mrietirs. ~t~Vl-parted, 

 very handsome, l,'-2' broad; stems simple or sparingly branched, 1°- 

 2° high. 



S. chloroides, Pur.sh. Along sandy ponds, from Mass., S. ; leaves 

 lanceolate; peduncles l-flowered!i slender ; calyx lobes linear. 



S. gentianoides, ICll. Stem leaves linear; flowers short-pednnclcd or 

 sessile, clustered. Wet barrens, Ga., S. 



2. FRASERA, AMERICAN CALUMBA. (John Fraser, who col- 

 lected in this country a century ago.) 



F. Carolin^nsis, Walt. Rich wooded ground X. Y. to Wis, andS. ; 

 root very large and deep, bitter fused in medicine as a substitute for 



